Clamp



June 19, 1923.

R. ELDERTON ET AL CLAMP" Filed sept. 9.

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Patented June 19', 1923.

' UNITED STATES.

PAT-ENT OFFICE.

CLAMP.

Application filed September 9, 1922. Serial No. 587,245.

To all whom t may concer/n:

Be it known that we, ROBERT 'ELDERTON and CLARENCE yD. BALDWIN, citizensof the United States, residing at Independence, in the county ofBuchanan and State of Iowa, have invented certain new and useful Im-lprovements in a Clamp, of which the following is a specification.

The present invention relates to a clamp and has for its principalobject to provide a structure capable of fastening a canvas upon aconcrete pavement so as to prevent the canvas from blowing therefromduring the drying process of the concrete.

Another object of the invention is to rovide a clamp of this naturewhich will) be simple and eflcient in construction, reliable inoperation, com rativel inexpensive to manufacture, dura le, readilyoperated, and Well adapted to the purpose for which it is desi e i iththe above and numerous other objects in view as will appear as thedescription progresses, the invention resides in certain novel featuresof construction, and the.

combination and arrangement of rts as y will be hereinafter more fullydescribed and claimed.

In the drawings Fi re 1 is a perspective of the clamp showing the samein use,

Figure 2 is a perspective of the clamp taken from a different angle fromthat shown in Figure 1,

Figure 3 is a perspective of the body of the clamp, and

i Figure 4 is a perspective of the movable aw. J Referring to thedrawing in detail it will be seen that the bod 1 of the clamp iselongated being provide at one end with a right angularly extendingapertured lip 2 while its other end terminates in a right angularlyextendin jaw 3 which is of a bifurcated construction having disposedbetween its bifurcations a curved tongue 4. The jaw 3 has itsbifurcations pointed so that .they may be driven inte wood or the likewhen found desirable or necessary and the tongue d forming part of the'aw is preferabl constructed to engage t e edge of eitlier a Wooden orstee beam. The body 1 is provided with an elongated longitudinallyextending slot 5. The movable jaw 6 is in the form of a plate having acentrally located amature 7 and at one end is provided with a T-shapedextension 8 ada ted to extend,`

through the slot in the bo y 1 asis illustrated toadvantage in Figure 2.A rod. 9 has one end. seated: within the aperture 7 of the movable' jaw6 and passes through the aperture 10 of the lip 2 and terminates in aright angularly extendin handle member 11. A coil spring 12 is isposedabout the rod 9 between the gear 2 and the movable jaw 6 tending tomovethe movable jaw so that'the T-shaped extension 8 is situated at theend 'of' the slot 5 in the body 1 adjacent the fixed jaw 3.

Referring especially to Figure 1 it will be seen that a sectionv of aconcrete pavement 13 has been illustrated with a sheet of canvas 14yspread thereover. Asis usual the side forml is constructed of wood andour clamp is situatedvso that the fixed jaw 3 engages the bottom edge ofthis side strip of the form 15, while the body 1 extendsl verticallytherewith. The movable jaw 6 rests upon the canvas 14 and the spring 12holds the movable jaw in frictional engagement with the canvas therebypreventing the Wind from blowig the same off the concrete pavement" 13.hen it is desired to release the clam all that is necessary is to pullupwar y u on the rod 9 and move the clamp slight y ownwardly so as todisengage the `tongue 4 from the form 15 whereby the fixed jaw mayreadily be disengaged therefrom and the entire clamp removed. Thisparticular use of the clamp, however, has merely been 'ven (bg Way ofexample and it is to be un ersto that the device may be put to numerousother usages. llt is also to be understood that the particularconstruction which We have illustrated has also merely been given by wayof example and that numerous changes in the details of construction andin the combination and arran ment of parts may be resorted to without 2-partlng from the spirit of the invention as hereinafter claimed.

Havingthus described our invention what We claim as new is 1. A clamp ofthe class described including a lon 'tudinally slotted body formed witha rig t angularl extending amrtured lip at one end and a xedbifurcated'jaw at its other end and a ton e disposed .between thebifurcations of the xed jaw, and a movable jaw providedwith a 'lf-Shadextension at one end projecting throng the slotted body, a rod attachedat one end to the Q Lemme movable jaw and projecting through the of thebody and disposed at right angles aperture of the lip on the body, aspring thereto, a Vrod attached at one end. to the disposed about therod between the apermovable jaw and projecting through the tured lip andthe movable jaw so as to noraperture of the lip onthe body, and a spring5 mally hold the movable jaw adjacent the disposed betweenI the lip andthe movable 20' xed jaw, and the other end of said rod bejavv above therod so as. to normally hold ing curved at substantially right angles themovable jaw adjacentr the xed jaw.

, thereto for forming a handle. portion. ln testimony whereof we ax oursigna- 2. A clamp 3f tllile class dscriled ncludL tures in presence oftwo witnesses. 10 ing a longitu ina y slotte bo y orme v with a rightangularly-eXtendi-ngapertured lip at one end and a fixed jaw at itsother end extendin in the same direction with the lip, Witnesses:

a movab e jaw in the form ofa plate hav- JNO. MOMILLAN, 15 ing one endthereof engageable with the slot Arm F. M

